
Seems like no creative image thumbnail (visual) is available.

Good news, this is already available in the LinkedIn Ads connector. We expose Creative thumbnail (id: creative_thumbnail), an image field (type IMAGE_URL) under the Creative table that returns the creative’s actual image/video thumbnail URL for your ads. Just add it to your query alongside your creative or ad dimensions, and in Looker Studio it will render as the visual thumbnail. It covers single-image, video, and carousel creatives.
